a(n) is the least number k such that A048105(k) = A048105(k+1) = 2*n, and 0 if it does not exist.
A344315
a(n) is the least number k such that A048105(k) = A048105(k+1) = 2*n, and 0 if it does not exist.
Terms
- a(0) =1a(1) =27a(2) =135a(3) =2511a(4) =2295a(5) =6975a(6) =5264a(7) =12393728a(8) =12375a(9) =2200933376a(10) =108224a(11) =257499a(12) =170624a(14) =4402431a(16) =126224a(17) =41680575a(18) =701443071a(19) =46977524a(20) =1245375a(21) =2707370000a(22) =4388175a(23) =3129761024a(24) =1890944
External references
- oeis: A344315